Article 38 of the Criminal Procedure Law stipulates that:
Defense lawyers can provide legal aid to criminal suspects during investigation; Acting as an agent for complaints and accusations; Apply for changing compulsory measures; Ask the investigation organ about the crimes and cases suspected by the criminal suspect, and put forward opinions.
legal ground
Article 43 of the Criminal Procedure Law of People's Republic of China (PRC) * * * Defence lawyers may, with the consent of witnesses or other relevant units and individuals, collect materials related to the case from them, apply to the people's procuratorate or the people's court to collect and obtain evidence, or apply to the people's court to notify witnesses to testify in court. With the permission of the people's procuratorate or the people's court, and with the consent of the victim or his close relatives or witnesses provided by the victim, the defense lawyer may collect materials related to the case from them.